Shimano CS-HG710 12 Speed CassetteReady for day long adventures on your drop handlebar road bike, this 12 speed cassette features a wide 11-36T range of 327% for excellent efficiency, so none of your effort is wasted. Whether you're sprinting on the flats to steep climbs, you can benefit from its wider gear ratio that's tailored to suit every road situation. Another highlight is each of its gear steps are optimised for pedalling efficiency, with the first eight cogs focusing on a natural and comfortable connection, and the largest four cogs allowing you to select from a wide range of gears while avoiding abrupt gear ratio changes. Compatible with both Shimano 11 and 12 speed freehub bodies, this cassette is a versatile choice of upgrade for conquering your next road adventure.12 Speed Cassette with Hyperglide TechnologyThe distinctively designed Hyperglide sprockets incorporate specially positioned shift ramps and tooth profiles for improved chain control during shifting. Fast and responsive indexed shifting is the result. The HG cassette sprocket, which was developed for the mountain bike (MTB) 10 speed system, underwent comprehensive optimisation to achieve super-highly efficient shifting for road cycling.Features: Cogs Material: Steel Spider Material: Aluminium Use: Road Speed: 12 speed Combination: 11-36T Compatible Chain: HG 12 speed Series: Shimano 105 R7100 Di2 SeriesManufacturer's Part Numbers: CSHG71012136A 2-year warranty is offered with all Shimano products from Chain Reaction Cycles (3 years on Dura-Ace and XTR products).Buy Shimano Components from Chain Reaction Cycles, the World's Largest Online Bike Store.